Base portion of an archive box



FIG. 1 is a top perspective view of a base portion of an archive box in accordance with the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a bottom perspective view thereof.

An inner surface of the base portion shown in FIGS. 1 and 6 is shown in broken lines and forms no part of the claimed design. 

The ornamental design for a base portion of an archive box, as shown and described. 